Spring bed-bottom



(No Model.)

A. F. MILLER.

SPRING BED BOTTOM.

, No. 341,494. Patented May 11, 1886.

IIJS. I.

WITNESSESJ N. PETERS, Phocfumugmpmr, wmingwn. b. c,

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UNITED STATES PATENT OFFICE.

ALBERT F. MILLERfOF CAMDEN, 'NEV JERSEY.

SPRING BED-BOTTOM.

SPECIFICATION forming part of Letters Patent No. 341,494-, dated May 11,1886.

Serial No. 143,909. (No model.)

To all whom it may concern:

Be it known that l, ALBERT F. MILLER, a citizen ot' the United States,residing in the city and county of Camden, State of New Jersey,have'invented a new and useful Improvement in Spring Bed-Bottoms, whichimprovement is fully set forth in the following specilication andaccompanying drawings, in which- Figure 1 represents a side elevation ofa spring-bed bottom embodying my invention, partly broken away. Fig. 2represents a bottom plan view thereof, the cover being removed. Fig. 3represents a Vertical section of a portion in line af x, Fig. l.

Similar letters of reference indicate corresponding parts in the severalfigures.

My invention consists of a spring bedbottom having means, as hereinafterdescribed and definitely claimed, for adjusting the tension ol thesprings or tightening the same.

It also consists of straps rigidly connected with the frame andsupporting the springs.

Referring to the drawings, A represents a frame, and B represents strapsof metal, which are rigidly connected with the under side of the frameand support a frame, C, on which the springs D D are sustained.

E represents the cover, which, rest-ing on the springs D, may be madfwoven wire or other suitable material, the ends of the same beingsecured to brackets formed of plates F, pivotcd to the sides ot" theframe A, respectively at the head and foot portions thereof, the meansfor connecting the cover with said plates F being transversely'extendingbars G, which are secured to the top connectingplates, F, of saidplates, and transversely-extending strips H, which are attached to saidbars, the ends of the cover being fitted and clamped between the barsand strips and firmly held by the same.

The bars G and plates F are shown secured by screws a; but it is evidentthat the plates F may be made of cast metal, and have sock-A ets on theupper sides te receive the ends ot' the bars, as shown by the dottedlines.

Rising from the side rails of the frame are eyebolts or bosses J, thesame being vertically arranged, and the eyes thereof are threaded toreceive screws or bolts K,`which are adapted to bear against the bars G,on the inner sides thereof.

The screws or bolts K are primarily used for adjusting the tension ofthe cover, so that the same is neither too taut nor too loose, andshould the cover become loose or sag the screws or bolts K are properlyoperated in order to force the plates F outwardly, the same turning ontheir axes or pivots and moving the cover in opposite directions, thustightening the same, it being evident that each end of the cover or anycorner ofthe same may be adjusted independently of the other ends orcorners.

The plates F embrace opposite sides of each of the side pieces of theframe, and are'connected at the top by the horizontal pieces F. The barsG are screwed to said pieces F, and thus as the plates F are preventedfrom lateral motions and the hars G are rigidly secured to the plates Fthe frame is strength ened and the side pieces of said frame held apartand prevented from coming together.

As the brackets formed by the plates F F are pivoted to the frame, andthe cover or bottom E is of convex form, when the brackets are moved totighten said cover the radial motions of the brackets cause thetightening of the cover, preserving the conveXity thereof.

The straps B are suiciently strong and rigid to sustain the springs Dand cover, and possess suiiicient elasticity to increase the yieldingnature of the bottom.

Having thus described myinvention, whatI claim as new, and desire tosecure by Letters Patent, is-

l.. In a bedbottom, a pivoted bracket formed of two side plates and atop connecting-plate, said side plates embracing the opposite sides ofthe rail to which they are pivoted, substantially as described.

2. In a spring bed-bottom, the frame A, the clamping bars and strips GH, the threaded eye J, and screw-bolt K, in combination with pivotedbrackets formed of side and top plates, the two side plates of eachbracket embracing theopposite sides of the rail, to which they arepivoted, substantially as described.

ALBERT F. MILLER.

Witnesses:

J No. A. WIEDERsHEIM, A. P. GRANT.

